The story of coal.

The geological and chemical processes creating types of coal illustrated with drawings and photographs introduced by intertitles.

Bibliographic Details
Format:	Video
Language:	English
Language Notes:	In English.
Published:	New York, NY : Bray Pictures Corp., [between 1914 and 1928?]
Series:	American history in video.
Subjects:	Coal mines and mining. Charbon > Mines et extraction. Coal mines and mining Streaming video. Streaming videos. documentary film. Feature films Documentary films Nonfiction films Short films Short films. Nonfiction films. Documentary films. Feature films. Courts métrages. Films autres que de fiction. Documentaires.
Online Access:	Connect to this streaming video (Alexander Street Press)

Description
Summary:	The geological and chemical processes creating types of coal illustrated with drawings and photographs introduced by intertitles.
Physical Description:	1 online resource (11 min.).
Playing Time:	00:10:27